Xcode playground localizedStringWithFormat

BeersOnWall.swift

import Cocoa
import PlaygroundSupport


//: ### Put Localizable.stringsdict in ~/Documents/Shared Playground Data

let bundle = Bundle(url: playgroundSharedDataDirectory)!

let format1 = NSLocalizedString("beers_on_wall", tableName: nil, bundle: bundle, value: "", comment: "")

let format2 = NSLocalizedString("next_step", tableName: nil, bundle: bundle, value: "", comment: "")
let format3 = NSLocalizedString("after_next_step", tableName: nil, bundle: bundle, value: "", comment: "")

let beers = 0...99
for beer in beers.reversed() {
   let initial = String.localizedStringWithFormat(format1, beer, beer)
   let nextStep = String.localizedStringWithFormat(format2, beer)
   
   var nextBeer = beer - 1
   if nextBeer < 0 {
      nextBeer = beers.max()!
   }
   
   let afterNext = String.localizedStringWithFormat(format3, nextBeer)
   
   print("\(initial)\n\(nextStep) \(afterNext)\n")
}

Localizable.stringsdict

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>beers_on_wall</key>
	<dict>
		<key>NSStringLocalizedFormatKey</key>
		<string>%#@beers@</string>
		<key>beers</key>
		<dict>
			<key>NSStringFormatSpecTypeKey</key>
			<string>NSStringPluralRuleType</string>
			<key>NSStringFormatValueTypeKey</key>
			<string>d</string>
			<key>other</key>
			<string>%d bottles of beer on the wall, %d bottles of beer!</string>
			<key>one</key>
			<string>%d bottle of beer on the wall, %d bottle of beer!</string>
			<key>zero</key>
			<string>No bottles of beer on the wall, no bottles of beer!</string>
		</dict>
	</dict>
	<key>next_step</key>
	<dict>
		<key>NSStringLocalizedFormatKey</key>
		<string>%#@next@</string>
		<key>next</key>
		<dict>
			<key>NSStringFormatSpecTypeKey</key>
			<string>NSStringPluralRuleType</string>
			<key>NSStringFormatValueTypeKey</key>
			<string>d</string>
			<key>other</key>
			<string>Take one down, pass it around,</string>
			<key>one</key>
			<string>Take one down, pass it around,</string>
			<key>zero</key>
			<string>Go to the store and buy more beer,</string>
		</dict>
	</dict>
	<key>after_next_step</key>
	<dict>
		<key>NSStringLocalizedFormatKey</key>
		<string>%#@after_next@</string>
		<key>after_next</key>
		<dict>
			<key>NSStringFormatSpecTypeKey</key>
			<string>NSStringPluralRuleType</string>
			<key>NSStringFormatValueTypeKey</key>
			<string>d</string>
			<key>other</key>
			<string>%d bottles of beer on the wall.</string>
			<key>one</key>
			<string>%d bottle of beer on the wall.</string>
			<key>zero</key>
			<string>no bottles of beer on the wall.</string>
		</dict>
	</dict>
</dict>
</plist>